diff --git a/skeletons/BMPString.c b/skeletons/BMPString.c
index 10fd05e..1bfb174 100644
--- a/skeletons/BMPString.c
+++ b/skeletons/BMPString.c
@@ -23,7 +23,7 @@
 	OCTET_STRING_encode_der,
 	BMPString_decode_xer,		/* Convert from UTF-8 */
 	BMPString_encode_xer,		/* Convert to UTF-8 */
-	0,
+	0, 0,
 	0, /* Use generic outmost tag fetcher */
 	asn_DEF_BMPString_tags,
 	sizeof(asn_DEF_BMPString_tags)